PSYCH 1XX3 Lecture Notes - Lecture 8: Extrastriate Cortex, Infant Visual Development, Visual Cortex
Document Summary
Recall: the brain uses a division of labour, with each region along the visual pathway processing relatively specific information and then passing it on. In the retina, transduce the light stimulus into a neural impulse. Magno cells found mainly in the periphery of the retina, used for detecting changes in brightness, motion and depth. Parvo cells found throughout retina and are important for detecting colour, pattern, and form. These ganglion cells, with their small receptive fields, are the crucial first step to object recognition. From the retina, the axons of these cells exit the eye via the optic nerve, travel to the lgn, and end up in the primary visual cortex in the occipital lobe. Cells here are very particular about what will make them fire, these cells are called feature detectors. Recorded the electrical activity in an individual neuron of the squid.
